Definitely need to lift that side up and check the wheel for tightness. Could be a loose wheel bearing, tie rod or ball joint. If not those, then possibly having to do with the strut assembly.
get front tires balanced
it depends on when it vibrates. If it vibrates when driving then it is most likely that you need to get an alignment or your tires balanced or maybe even loose lugnuts on the tires. If it is only when braking then you probably need new rotors or you need to get yours resurfaced.
Your tires are bad or you need an alignment. Get your tires checked, they may need to be replaced or rotated, and you can check your alignment by letting go of the steering wheel while driving, if it drifts left or right significantly, you need an alignment.
Open the drivers door and I believe there is a sticker on the end of the door or on the pillar which shows the original size tires that were installed on the vehicle at the factory
Bad CV joint? How about a bad steering box?
This is my question Turns out it was a badly worn right axle Vibrating while braking is a warped rotor.
tires are out balance or may have bad cv joint
Are you sure about that? Have you had your tires balanced recently? If so and they are balanced, check to make sure you don't need a front end alignment.
tires. possible 1 or more has belt separation
Because new tires give a better ride and more grip on the road.
For any car (as long as it has the stock size tires) you are supposed to go by what tire pressure it says right in the drivers side door jamb. But the s2000 is 32 psi in all four tires.
Getting your tires balanced should help stop your shutter and shake.